EP2137973A2 - Verfahren und vorrichtungen für videobenutzbarkeitsinformationen (vui) für die skalierbare videokodierung (svc) - Google Patents

Verfahren und vorrichtungen für videobenutzbarkeitsinformationen (vui) für die skalierbare videokodierung (svc)

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Publication number
EP2137973A2
EP2137973A2 EP08727011A EP08727011A EP2137973A2 EP 2137973 A2 EP2137973 A2 EP 2137973A2 EP 08727011 A EP08727011 A EP 08727011A EP 08727011 A EP08727011 A EP 08727011A EP 2137973 A2 EP2137973 A2 EP 2137973A2
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EP
European Patent Office
Prior art keywords
syntax element
bitstream
user information
video coding
max
Prior art date
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Granted
Application number
EP08727011A
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English (en)
French (fr)
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EP2137973B1 (de
Inventor
Jiancong Luo
Peng Yin
Lihua Zhu
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InterDigital VC Holdings Inc
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Thomson Licensing SAS
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Application filed by Thomson Licensing SAS filed Critical Thomson Licensing SAS
Priority to EP21200633.2A priority Critical patent/EP3968642A1/de
Priority to EP19155114.2A priority patent/EP3518547B1/de
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/31—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the temporal domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Definitions

  • VUI VIDEO USABILITY INFORMATION
  • SVC SCALABLE VIDEO CODING
  • VUI video usability information
  • SVC scalable video coding
  • VUI Video Usability Information
  • VUI provides extra information of the bitstream to the user for a variety of purposes.
  • bitstream restriction information VUI specifies: (1) if the motion is over picture boundary; (2) maximal bytes per picture; (3) maximal bits per macroblock; (4) maximal motion vector length (horizontal and vertical); (5) number of reordering frames; and (6) maximal decoded frame buffer size.
  • the decoder can customize its decoding operation based on the tighter limit.
  • the apparatus includes an encoder for encoding video signal data into a bitstream.
  • the encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element.
  • the video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding.
  • the method includes encoding video signal data into a bitstream.
  • the encoding step includes specifying video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element.
  • the video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding.
  • an apparatus includes a decoder for decoding video signal data from a bitstream.
  • the decoder determines video user information, excluding hypothetical reference decoder parameters, from the bitstream using a high level syntax element.
  • the video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding.
  • the method includes decoding video signal data from a bitstream.
  • the decoding step includes determining video user information, excluding hypothetical reference decoder parameters, from the bitstream using a high level syntax element.
  • the video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding.
  • FIG. 1 is a block diagram for an exemplary scalable video encoder to which the present principles may be applied
  • FIG. 2 is a block diagram for an exemplary scalable video decoder to which the present principles may be applied;
  • FIG. 3 is a flow diagram for an exemplary method for encoding Video User Information (VUI), in accordance with an embodiment of the present principles
  • FIG. 4 is a flow diagram for an exemplary method for decoding Video User Information (VUI), in accordance with an embodiment of the present principles
  • FIG. 5 is a flow diagram for an exemplary method for encoding an MPEG-4 AVC Standard temporal Supplemental Enhancement Information (SEI) message, in accordance with an embodiment of the present principles.
  • SEI Supplemental Enhancement Information
  • FIG. 6 is a flow diagram for an exemplary method for decoding an MPEG-4 AVC Standard temporal Supplemental Enhancement Information (SEI) message, in accordance with an embodiment of the present principles.
  • SEI Supplemental Enhancement Information
  • VUI video usability information
  • SVC scalable video coding
  • processor or “controller” should not be construed to refer exclusively to hardware capable of executing software, and may implicitly include, without limitation, digital signal processor (“DSP”) hardware, read-only memory (“ROM”) for storing software, random access memory (“RAM”), and non-volatile storage.
  • DSP digital signal processor
  • ROM read-only memory
  • RAM random access memory
  • any switches shown in the figures are conceptual only. Their function may be carried out through the operation of program logic, through dedicated logic, through the interaction of program control and dedicated logic, or even manually, the particular technique being selectable by the implementer as more specifically understood from the context.
  • any element expressed as a means for performing a specified function is intended to encompass any way of performing that function including, for example, a) a combination of circuit elements that performs that function or b) software in any form, including, therefore, firmware, microcode or the like, combined with appropriate circuitry for executing that software to perform the function.
  • the present principles as defined by such claims reside in the fact that the functionalities provided by the various recited means are combined and brought together in the manner which the claims call for. It is thus regarded that any means that can provide those functionalities are equivalent to those shown herein.
  • high level syntax refers to syntax present in the bitstream that resides hierarchically above the macroblock layer.
  • high level syntax may refer to, but is not limited to, syntax at the slice header level, Supplemental Enhancement Information (SEI) level, Picture Parameter Set (PPS) level, Sequence Parameter Set (SPS) level and Network Abstraction Layer (NAL) unit header level.
  • SEI Supplemental Enhancement Information
  • PPS Picture Parameter Set
  • SPS Sequence Parameter Set
  • NAL Network Abstraction Layer
  • Scalable video coding is an extension (Annex G) to the MPEG-4 AVC Standard.
  • a video signal can be encoded into a base layer and one or more enhancement layers constructed in a pyramidal fashion.
  • An enhancement layer enhances the temporal resolution (i.e., the frame rate), the spatial resolution, or simply the quality of the video content represented by another layer or part thereof.
  • Each layer together with all its dependent layers is one representation of the video signal at a certain spatial resolution, temporal resolution, and quality level.
  • Each layer in combination with all its dependent layers that require decoding the video signal at a certain spatial resolution, temporal resolution and quality level are denoted by an interoperability point (lOP), also referred to as operation points.
  • lOP interoperability point
  • An SVC bitstream typically has multiple lOPs, due at least in part to the fact that the bitstream is scalable.
  • Such a bitstream may be scalable spatially, temporally, and in Signal-to-Noise Ratio (SNR), for example.
  • Sub-bitstreams, corresponding to the scalable aspects, may be extracted from the bitstream.
  • an exemplary scalable video encoder to which the present invention may be applied is indicated generally by the reference numeral 100.
  • a first output of a temporal decomposition module 142 is connected in signal communication with a first input of an intra prediction for intra block module 146.
  • a second output of the temporal decomposition module 142 is connected in signal communication with a first input of a motion coding module 144.
  • An output of the intra prediction for intra block module 146 is connected in signal communication with an input of a transform/entropy coder (signal to noise ratio (SNR) scalable) 149.
  • a first output of the transform/entropy coder 149 is connected in signal communication with a first input of a multiplexer 140.
  • a first output of a temporal decomposition module 132 is connected in signal communication with a first input of an intra prediction for intra block module 136.
  • a second output of the temporal decomposition module 132 is connected in signal communication with a first input of a motion coding module 134.
  • An output of the intra prediction for intra block module 136 is connected in signal communication with an input of a transform/entropy coder (signal to noise ratio (SNR) scalable) 139.
  • SNR signal to noise ratio
  • a first output of the transform/entropy coder 139 is connected in signal communication with a first input of a multiplexer 130.
  • a second output of the transform/entropy coder 149 is connected in signal communication with an input of a 2D spatial interpolation module 138.
  • a second output of the motion coding module 144 is connected in signal communication with an input of the motion coding module 134.
  • a first output of a temporal decomposition module 122 is connected in signal communication with a first input of an intra predictor 126.
  • a second output of the temporal decomposition module 122 is connected in signal communication with a first input of a motion coding module 124.
  • An output of the intra predictor 126 is connected in signal communication with an input of a transform/entropy coder (signal to noise ratio (SNR) scalable) 129.
  • An output of the transform/entropy coder 129 is connected in signal communication with a first input of a multiplexer 120.
  • a second output of the transform/entropy coder 139 is connected in signal communication with an input of a 2D spatial interpolation module 128.
  • a second output of the motion coding module 134 is connected in signal communication with an input of the motion coding module 124.
  • a first output of the motion coding module 124, a first output of the motion coding module 134, and a first output of the motion coding module 144 are each connected in signal communication with a second input of the multiplexer 170.
  • a first output of a 2D spatial decimation module 104 is connected in signal communication with an input of the temporal decomposition module 132.
  • a second output of the 2D spatial decimation module 104 is connected in signal communication with an input of the temporal decomposition module 142.
  • An input of the temporal decomposition module 122 and an input of the 2D spatial decimation module 104 are available as inputs of the encoder 100, for receiving input video 102.
  • An output of the multiplexer 170 is available as an output of the encoder 100, for providing a bitstream 180.
  • the temporal decomposition module 122, the temporal decomposition module 132, the temporal decomposition module 142, the motion coding module 124, the motion coding module 134, the motion coding module 144, the intra predictor 126, the intra predictor 136, the intra predictor 146, the transform/entropy coder 129, the transform/entropy coder 139, the transform/entropy coder 149, the 2D spatial interpolation module 128, and the 2D spatial interpolation module 138 are included in a core encoder portion 187 of the encoder 100.
  • an exemplary scalable video decoder to which the present invention may be applied is indicated generally by the reference numeral 200.
  • An input of a demultiplexer 202 is available as an input to the scalable video decoder 200, for receiving a scalable bitstream.
  • a first output of the demultiplexer 202 is connected in signal communication with an input of a spatial inverse transform SNR scalable entropy decoder 204.
  • a first output of the spatial inverse transform SNR scalable entropy decoder 204 is connected in signal communication with a first input of a prediction module 206.
  • An output of the prediction module 206 is connected in signal communication with a first input of a combiner 230.
  • a second output of the spatial inverse transform SNR scalable entropy decoder 204 is connected in signal communication with a first input of a motion vector (MV) decoder 210.
  • An output of the MV decoder 210 is connected in signal communication with an input of a motion compensator 232.
  • An output of the motion compensator is connected in signal communication with a second input of the combiner 230.
  • a second output of the demultiplexer 202 is connected in signal communication with an input of a spatial inverse transform SNR scalable entropy decoder 212.
  • a first output of the spatial inverse transform SNR scalable entropy decoder 212 is connected in signal communication with a first input of a prediction module 214.
  • a first output of the prediction module 214 is connected in signal communication with an input of an interpolation module 216.
  • An output of the interpolation module 216 is connected in signal communication with a second input of the prediction module 206.
  • a second output of the prediction module 214 is connected in signal communication with a first input of a combiner 240.
  • a second output of the spatial inverse transform SNR scalable entropy decoder 212 is connected in signal communication with a first input of an MV decoder 220.
  • a first output of the MV decoder 220 is connected in signal communication with a second input of the MV decoder 210.
  • a second output of the MV decoder 220 is connected in signal communication with an input of a motion compensator 242.
  • An output of the motion compensator 242 is connected in signal communication with a second input of the combiner 240.
  • a third output of the demultiplexer 202 is connected in signal communication with an input of a spatial inverse transform SNR scalable entropy decoder 222.
  • a first output of the spatial inverse transform SNR scalable entropy decoder 222 is connected in signal communication with an input of a prediction module 224.
  • a first output of the prediction module 224 is connected in signal communication with an input of an interpolation module 226.
  • An output of the interpolation module 226 is connected in signal communication with a second input of the prediction module 214.
  • a second output of the prediction module 224 is connected in signal communication with a first input of a combiner 250.
  • a second output of the spatial inverse transform SNR scalable entropy decoder 222 is connected in signal communication with an input of an MV decoder 230.
  • a first output of the MV decoder 230 is connected in signal communication with a second input of the MV decoder 220.
  • a second output of the MV decoder 230 is connected in signal communication with an input of a motion compensator 252.
  • An output of the motion compensator 252 is connected in signal communication with a second input of the combiner 250.
  • An output of the combiner 250 is available as an output of the decoder 200, for outputting a layer 0 signal.
  • An output of the combiner 240 is available as an output of the decoder 200, for outputting a layer 1 signal.
  • An output of the combiner 230 is available as an output of the decoder 200, for outputting a layer 2 signal.
  • NAL Network Abstraction Layer
  • HRD Hypothetical Reference Decoder
  • VCL Virtual Coding Layer
  • HRD Hypothetical Reference Decoder
  • SVC Scalable Video Coding
  • VUI Video Usability Information
  • SVC Scalable Video Coding
  • SEI Supplemental Enhancement Information
  • the Hypothetical Reference Decoder parameters in the Video VUI are set for each IOP for Scalable Video Coding, but the other VUI information uses only one set of VUI parameter for the bitstream. Since the decoder is supposed to decode only subsets of the video signals (corresponding to lOPs), the size of the data corresponding to each IOP which is required to be transmitted and decoded varies from IOP to IOP. Therefore, we believe that besides Hypothetical Reference Decoder parameters, some other VUI information should be sent to each IOP or a set of IOPs for some information. In particular, we are considering bitstream restriction information in VUI.
  • bitstream restriction information we use bitstream restriction information as an example.
  • VUI information may also be used in accordance with the present principles. That is, given the teachings of the present principles provided herein, one of ordinary skill in this and related arts will contemplate these and various other types of VUI information to which the present principles may be applied, while maintaining the spirit of the present principles.
  • a set of IOPs share the same bitstream restriction information. For example, all layers with the same dependency_id share the same bitstream restriction information.
  • bitstream restriction information for each IOP.
  • An IOP can be uniquely identified by the combination of dependencyjd, temporaljd and qualityjd.
  • i is the index of IOP, the bitstream restriction information includes the following syntax:
  • bitstream_restriction_flag [ i ] - indicates that the bitstream restriction information for the current scalable layer is present in the SEI message.
  • bitstream_restriction_flag[ i ] equal to 0 specifies that the bitstream restriction information for the scalable layer having the dependencyjd equal to dependency_id[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality_id[ i ] is not present in the SEI message.
  • motion_vectors_over_pic_boundaries_flag [ i ] specifies the value of motion_vectors_over_pic_boundaries_flag of the scalable layer having the dependency_id equal to dependency_id[ i ], temporaljd equal to temporal_id[ i ] and quality_id equal to quality_id[ i ].
  • motion_vectors_over_pic_boundaries_flag[ i ] syntax element When the motion_vectors_over_pic_boundaries_flag[ i ] syntax element is not present, motion_vectors_over_pic_boundaries_flag value of the scalable layer having the dependencyjd equal to dependency_id[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality_id[ i ] shall be inferred to be equal to 1.
  • max_bytes_per_pic_denom [ i ] specifies the max_bytes_per_pic_denom value of the scalable layer having the dependencyjd equal to dependency jd[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality jd[ i ].
  • temporaljd equal to temporal jd[ i ]
  • qualityjd equal to quality jd[ i ]
  • maxjoits_per_mb_denom [ i ] specifies the max_bits_perjnb_denom value of the scalable layer having the dependencyjd equal to dependency jd[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality jd[ i ].
  • max_bitsjDer_mb_denom[ i ] the value of max_bitsjDer_mb_denom of the scalable layer having the dependencyjd equal to dependency_id[ i ]
  • temporaljd equal to temporal_id[ i ]
  • qualityjd equal to quality_id[ i ]
  • Iog2_max_mv_lengthj v ⁇ orizontal[ i ] When Iog2_max_mv_lengthj v ⁇ orizontal[ i ] is not present, the values of Iog2 jnax_mv_length_horizontal and Iog2 jnaxjnvjength j/ertical of the scalable layer having the dependencyjd equal to dependency_id[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality_id[ i ] shall be inferred to be equal to 16.
  • num_reorder_frames [ i ] specifies the value of num_reorder_frames of the scalable layer having the dependency_id equal to dependency_id[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality_id[ i ].
  • the value of num_reorder_frames[ i ] shall be in the range of 0 to max_dec_frame_buffering, inclusive.
  • the value of num_reorder_frames of the scalable layer having the dependencyjd equal to dependency_id[ i ], temporaljd equal to temporal jd[ i ] and qualityjd equal to quality_id[ i ] shall be inferred to be equal to maxjdec_frame_buffehng.
  • max_dec_frame_buffering [ i ] specifies the value of max_dec_frame_buffering of the scalable layer having the dependencyjd equal to dependency jd[ i ], temporaljd equal to temporal jd[ i ] and qualityjd equal to quality jd[ i ].
  • the value of maxjdec_frame_buffering[ i ] shall be in the range of num_ref_frames[ i ] to MaxDpbSize (as specified in sub-clause A.3.1 or A.3.2 in the MPEG-4 AVC Standard), inclusive.
  • maxjdec_frame_buffering[ i ] syntax element When the maxjdec_frame_buffering[ i ] syntax element is not present, the value of maxjdec_frame_buffering of the scalable layer having the dependencyjd equal to dependency jd[ i ], temporaljd equal to temporal_id[ i ] and qualityjd equal to quality jd[ i ] shall be inferred to be equal to MaxDpbSize.
  • TABLE 2 includes the proposed VUI syntax for this embodiment relating to defining bitstream restriction information for each lOP.
  • VUI Video User Information
  • the method 300 includes a start block 305 that passes control to a decision block 310.
  • the decision block 310 determines whether or not profilejdc is equal to SVC. If so, then control is passed to a function block 315. Otherwise, control is passed to a function block 350.
  • the function block 315 sets a variable M equal to the number of layers - 1 , and passes control to a function block 320.
  • the function block 320 writes the variable M to the bitstream, and passes control to the function block 325.
  • the function block 325 sets a variable i equal to zero, and passes control to a function block 330.
  • the function block 330 writes layer i's temporal level, dependencyjd, and qualityjevel to the bitstream, and passes control to a function block 335.
  • the function block 335 writes layer i's timing information and HRD parameters to the bitstream, and passes control to a function block 340.
  • the function block 340 writes layer i's bitstream restriction information to the bitstream, and passes control to a decision block 345.
  • the decision block 345 determines whether or not the variable i is equal to the variable M. If so, control is passed to an end block 399. Otherwise, control is passed to a function block 360.
  • the function block 350 writes timing information and HRD parameters to the bitstream, and passes control to a function block 355.
  • the function block 355 writes bitstream restriction information to the bitstream, and passes control to the end block 399.
  • the function block 360 increments the variable i by one, and returns control to the function block 330.
  • VUI Video User Information
  • the method 400 includes a start block 405 that passes control to a decision block 410.
  • the decision block 410 determines whether or not profilejdc is equal to SVC. If so, the control is passed to a function block 415. Otherwise, control is passed to a function block 450.
  • the function block 415 reads a variable M from the bitstream, and passes control to a function block 420.
  • the function block 420 sets the number of layers equal to M + 1 , and passes control to a function block 425.
  • the function block 425 sets a variable i equal to zero, and passes control to a function block 430.
  • the function block 430 reads layer i's temporaljevel, dependencyjd, and qualityjevel from the bitstream, and passes control to a function block 435.
  • the function block 435 reads layer i's timing information and HRD parameters from the bitstream, and passes control to a function block 440.
  • the function block 440 reads layer i's bitstream restriction information from the bitstream, and passes control to a decision block 445.
  • the decision block 445 determines whether or not the variable i is equal to the variable M. If so, the control is passed to an end block 499. Otherwise, control is passed to a function block 460.
  • the function block 450 reads timing information and HRD parameters from the bitstream, and passes control to a function block 455.
  • the function block 455 reads bitstream restriction information from the bitstream, and passes control to the end block 499.
  • the function block 460 increments the variable i by one, and returns control to the function block 430.
  • the MPEG-4 AVC Standard compatible bitstream may include several temporal layers.
  • a Supplemental Enhancement Information (SEI) message is used.
  • SEI Supplemental Enhancement Information
  • the present principles are not limited solely to the use of SEI messages with respect to high level syntax and, thus, other high level syntaxes may also be used in accordance with the present principles, while maintaining the spirit of the present principles.
  • TABLE 3 illustrates a proposed AVC temporal Video User Information (VUI) Supplemental Enhancement Information (SEI) message, in accordance with an embodiment of the present principles.
  • VUI Video User Information
  • SEI Supplemental Enhancement Information
  • an exemplary method for encoding an MPEG-4 AVC Standard temporal Supplemental Enhancement Information (SEI) message is indicated generally by the reference numeral 500.
  • SEI Supplemental Enhancement Information
  • the method 500 includes a start block 505 that passes control to a function block 510.
  • the function block 510 sets a variable M equal to the number of temporal subsets in the base layer - 1 , and passes control to a function block 515.
  • the function block 515 writes the variable M to the bitstream, and passes control to a function block 520.
  • the function block 520 sets a variable i equal to zero, and passes control to a function block 525.
  • the function block 525 writes layer i's temporaljevel to the bitstream, and passes control to a function block 530.
  • the function block 530 writes layer i's bitstream restriction information to the bitstream, and passes control to a decision block 535.
  • the decision block 535 determines whether or not the variable i is equal to the variable M. If so, the control is passed to an end block 599. Otherwise, control is passed to a function block 540. The function block 540 increments the variable i by one, and returns control to the function block 525.
  • FIG. 6 an exemplary method for decoding an MPEG-4 AVC
  • Standard temporal Supplemental Enhancement Information (SEI) message is indicated generally by the reference numeral 600.
  • the method 600 includes a start block 605 that passes control to a function block 610.
  • the function block 610 reads a variable M from the bitstream, and passes control to a function block 615.
  • the function block 615 sets the number of temporal subsets in the base layer equal to the variable M + 1 , and passes control to a function block 620.
  • the function block 620 sets a variable i equal to zero, and passes control to a function block 625.
  • the function block 625 reads layer i's temporaljevel from the bitstream, and passes control to a function block 630.
  • the function block 630 reads layer i's bitstream restriction information from the bitstream, and passes control to a decision block 635.
  • the decision block 635 determines whether or not the variable i is equal to the variable M. If so, the control is passed to an end block 699. Otherwise, control is passed to a function block 640.
  • the function block 640 increments the variable i by one, and returns control to the function block 625.
  • one advantage/feature is an apparatus that includes an encoder for encoding video signal data into a bitstream.
  • the encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element.
  • the video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding.
  • Another advantage/feature is the apparatus having the encoder as described above, wherein the encoder specifies the video user information for each of the interoperability points in the bitstream relating to scalable video coding, including the set of interoperability points, using the high level syntax element.
  • Yet another advantage/feature is the apparatus having the encoder as described above, wherein the encoder specifies the video user information for each of the interoperability points relating to scalable video coding at a layer compatible with the International Organization for Standardization/International Electrotechnical Commission Moving Picture Experts Group-4 Part 10 Advanced Video Coding standard/International Telecommunication Union, Telecommunication Sector H.264 recommendation, using the high level syntax element.
  • Still another advantage/feature is the apparatus having the encoder as described above, wherein the video user information includes bitstream restriction information.
  • the apparatus having the encoder wherein the video user information includes bitstream restriction information as described above, wherein the bitstream restriction information includes at least one of a motion_vectors_over_pic_boundaries_flag syntax element, a max_bytes_per_pic_denom syntax element, a max_bits_per_mb_denom syntax element, a Iog2_max_mv_length_horizontal syntax element, a Iog2_max_mv_length_vertical syntax element, a num_reorder_frames syntax element, and a max_dec_frame_buffering syntax element.
  • the bitstream restriction information includes at least one of a motion_vectors_over_pic_boundaries_flag syntax element, a max_bytes_per_pic_denom syntax element, a max_bits_per_mb_denom syntax element, a Iog2_max_mv_length_horizontal syntax element, a Iog2_max_mv_length_vertical syntax
  • the apparatus having the encoder as described above, wherein the high level syntax element corresponds to at least at one of a slice header level, a sequence parameter set level, a picture parameter set level, a network abstraction layer unit header level, and a level corresponding to a supplemental enhancement information message.
  • Another advantage/feature is the apparatus having the encoder as described above, wherein a profilejdc syntax element is used to differentiate the bitstream for scalable video coding or for compliance with the International Organization for Standardization/International Electrotechnical Commission Moving Picture Experts Group-4 Part 10 Advanced Video Coding standard/International Telecommunication Union, Telecommunication Sector H.264 recommendation.
  • Another advantage/feature is the apparatus having the encoder as described above, wherein the encoder writes a dependency _id syntax element, a temporaljevel syntax element, and a qualityjevel syntax element to the bitstream for at least each of the interoperability points in the set.
  • Another advantage/feature is the apparatus having the encoder as described above, wherein the encoder writes a temporaljevel syntax element and a qualityjevel syntax element to the bitstream for at least each of the interoperability points in the set.
  • Another advantage/feature is the apparatus having the encoder as described above, wherein the encoder writes a temporaljevel syntax element to the bitstream for at least each of the interoperability points in the set.
  • the machine is implemented on a computer platform having hardware such as one or more central processing units (“CPU"), a random access memory (“RAM”), and input/output (“I/O") interfaces.
  • the computer platform may also include an operating system and microinstruction code.
  • the various processes and functions described herein may be either part of the microinstruction code or part of the application program, or any combination thereof, which may be executed by a CPU.
  • various other peripheral units may be connected to the computer platform such as an additional data storage unit and a printing unit.

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  • Compression Or Coding Systems Of Tv Signals (AREA)
EP08727011.2A 2007-04-12 2008-03-20 Verfahren und vorrichtungen für videobenutzbarkeitsinformationen (vui) für die skalierbare videokodierung (svc) Active EP2137973B1 (de)

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JP2010524394A (ja) 2010-07-15
JP2015043632A (ja) 2015-03-05
BRPI0809916B1 (pt) 2020-09-29
US10511845B2 (en) 2019-12-17
WO2008127536A3 (en) 2008-12-18
US20210112260A1 (en) 2021-04-15
US20190075310A1 (en) 2019-03-07
EP3518547B1 (de) 2021-10-06
US10154272B2 (en) 2018-12-11
JP5686594B2 (ja) 2015-03-18
US9826243B2 (en) 2017-11-21
BRPI0809916A2 (pt) 2014-10-07
EP3518547A1 (de) 2019-07-31
WO2008127536A2 (en) 2008-10-23
US11785230B2 (en) 2023-10-10
US11290732B2 (en) 2022-03-29
EP2137973B1 (de) 2019-05-01
EP3968642A1 (de) 2022-03-16
US20230412823A1 (en) 2023-12-21
CN101658038A (zh) 2010-02-24
JP6202690B2 (ja) 2017-09-27
JP2016034149A (ja) 2016-03-10
US20100098154A1 (en) 2010-04-22
JP5840280B2 (ja) 2016-01-06
US20200068210A1 (en) 2020-02-27
US20220174296A1 (en) 2022-06-02
US10897626B2 (en) 2021-01-19
US20180035119A1 (en) 2018-02-01

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